Ian F Alexander is an independent consultant researches with DaimlerChrysler (in Ulm, Germany) he also writes, teaches, and consults on requirements, especially scenarios.. He is on the committee of the BCS Requirements Engineering Specialist Group and runs the Requirements chapter of the IEE Professional Network for Systems Engineers. He has written extensively on Requirements
Neil Maiden is a Reader and Head of the Centre for Human-Computer Interface Design, in City University's School of Informatics, London UK. He is co-founder and treasurer of the British Computer Society Requirements Engineering Specialist Group.